Removing The Valves; Removing The Cylinder - Piston Assy - PIAGGIO MSS ZIP 100 4T Service Manual

MSS ZIP 100 4T

Removing the valves

- Using the specific tool fitted with the element
shown in the figure, remove the cotters, the plates
and the spring between the valves.
- Remove the oil seals with the appropriate tool.
- Remove the lower spring supports.
Specific tooling
020431Y Valve oil seal extractor

Removing the cylinder - piston assy.

- Remove the cylinder paying attention to the 2
cylinder centring dowels in the housing.
- Remove the cylinder base gasket.
To avoid damaging the piston, keep it fixed while
removing the cylinder.
- Remove the two stop rings, the wrist pin and the
piston.
- Remove the 3 piston rings.
N.B.
BE CAREFUL NOT TO DAMAGE THE PISTON RINGS DUR-
ING REMOVAL.
Engine
ENG - 89